baber/WOPTO huggingface dataset:
Patent GB-758793-A (GB)
Title: Improvements in or relating to processes for treating chromium-bearing ores
IPC: C01G37/14
Filed: 1954-08-20
Abstract: Chromium-bearing ores containing aluminium and vanadium are roasted with alkali, water-leached, to form a chromate <PICT:0758793/III/1> containing liquor, treated to precipitate aluminium by conventional means, and calcium oxide is supplied to the liquor without substantial dilution thereof at a pH of between 11.5 and 13, preferably 12 to 12.6, the liquor being then heated at a temperature of 50 to 70, preferably 60 to 65 DEG C., for 30 to 60 minutes, preferably 45 minutes, and the precipitate of calcium vanadate separated from the chromate liquor.  In a modification, calcium sulphate is added in place of calcium oxide and the pH adjusted with alkali, e.g. solid sodium hydroxide.  Calcium oxide when used should be added so as to provide a calcium oxide:vanadium pentoxide ratio of 1-33:1, preferably 5-15:1 by weight.  The removal of aluminium should be controlled so as to provide a liquor of pH 8.5-9.  The preferred calcium oxide material is "reburner lime," (calcium oxide obtained by calcining calcium carbonate derived from the production of caustic soda by the method involving reacting an aqueous solution of sodium carbonate with milk of lime, and containing about 6-15 per cent. of calcium carbonate) but dolomitic lime, slaked lime, and the wet mud resulting from the filtration of milk of lime from vertical kilns may also be used.  The process is described and illustrated in the flow sheet, in conjunction with a conventional process wherein hydrated alumina is precipitated at pH 8.5-9 with sulphuric acid or acid recycle solutions.  In connection with the prior art, Specification 661,945 and U.S.A. Specifications 828,850, 1,293,402, 1,392,745, 2,504,095, and 2,576,445 are referred to.
Patent GB-904486-A (GB)
Title: Improvements in and relating to electrical insulators
Inventor: BEBB RICHARD HODSON
IPC: H01B17/14
Filed: 1957-08-02
Abstract: 904,486. Insulators. FULLWOOD & BLAND Ltd., R. J. Nov. 3, 1958 [Aug. 2, 1957], No. 24491/57. Class 36. [Also in Group XXV] An insulator to support an electric fencing wire on a post comprises a portion having a recess 2 to receive the end of the post and having locking means, e.g. a ring 10, which fits at an angle into a projecting portion 7 of resilient material, so that the insulator can be pushed on to the end of a post and will then be held in place by frictional contact between the locking ring and the post. The body portion, including the projection 7, may be of polythene. To release the insulator from the post the ring 10 is pressed upwardly on the side away from the projection 7, thus removing frictional contact with the post. The locking- means may be a pivoted cam instead of a ring.
Patent GB-767952-A (GB)
Title: Improvements in refractors for street lighting purposes
Inventor: ENGLISH SOLOMON
IPC: F21V3/00
Filed: 1953-09-04
Abstract: 767,952. Street lamp reflectors. HOLOPHANE, Ltd. Dec. 6, 1954 [Sept. 4, 1953], No. 24528/53. Classes 75(2 )and 75(4) A refractor for use e.g. in a street lamp with a short tubular light source, e.g. 2 to 5 inches with a refractor 12 inches long, or with a small number, e.g. 2 or 3 individual sources mounted close together in line, the light source axis being horizontal, is of closed form, e.g. barrel shaped, about the light source axis and has axial prisms for controlling the light distribution in vertical planes and at least one band of vertical prisms for redirecting the light making a small angle with said axis into a direction at a greater angle. As shown, the vertical prism bands 21 are on the external surface of the barrel-shaped refractor and the axial prisms, Fig. 3 on the internal surface. With a plurality of light sources LC, there may be additional bands of vertical prisms between each two adjacent sources. The lowest zone on the external surface of the refractor may have a band of longitudinal or circumferential doublereflecting prisms, in the latter case for throwing light to the side of the street. The bands of vertcal prisms 21 may be on the internal surface and the longitudinal prisms on the external surface. The axial internal prisms, Fig. 3, from the line 25 downwards, are of increasing strength as their distance from line 25 increases so as to elevate the light falling upon them. From line 25 upwards the prisms refract the light down wards and increase in strength as their distance from line 25 increases, so that light emitted by the source or sources below an angle of, say 75 degrees from the nadir is elevated to redirect it along the street, while light emitted by the source or sources above the horizontal and just below the horizontal is depressed into useful directions. The prisms in the lower part of the upper zone from line 25 are preferably of curved contour. Above the line 26 beyond which no useful redirection of light can be effected by refracting prisms an internal reflector 27, Fig. 3 may be provided to return the light in a downward direction to be dealt with by the lower prisms and the prisms 'above the line 26 may be omitted. The barrel is made up of two parts 11, 12, slightly tapered and butted together at their larger ends, the part 11 having a recess 13, Fig. 2, to receive the plain end of the part 12 and is strengthened by a flange 14. A flanged metal plate 15 seats on a flanged annular wall on the outer end of each part, the whole being drawn together by rods 16, and nuts 17. The plates 15 serve to fix the refractor to a lantern frame and so support lampholders. Specifications 406,141, 496,979, 690,502 and 761,365 are referred to.
Patent GB-723173-A (GB)
Title: Mechanism for transmitting successively reversed rotational movements to an actuatedmember and for locking said member
IPC: F16H19/08
Filed: 1952-10-01
Abstract: 723,173. Toothed gearing. BEARN, J., and CALLOW, D. M. Aug. 13, 1953 [Oct. 1, 1952; March 30, 1953], Nos. 24596/52 and 8699/53. Class 80 (1) Rotary movement is imparted to a driven member 14 first in one direction and then the other with periods of rest between the reversals by means of two oppositely and continuously rotating toothed sector elements 7, 6 alternately engaging teeth on the member 14. The elements 7, 6 have toothed sectors 12, 9 engaging member 14 and plain portions 11, 8 adapted to engage in locking recesses 17, 16 respectively in the driven member 14. In operation, the element 7 drives, through the sector 12, the driven member 14 in an anticlockwise direction until the surface 11 engages in the recess 17 and the member 14 is locked, the element 6 being inoperative. On the surface 11 leaving the recess 17, the toothed sector 9 of element 6 engages the member 14 which is then driven in a clockwise direction until the surface 8 engages the locking recess 16. The driven member 14 is shown as driving a final gear 18 co-axially arranged with a gear 1 which drives through gears 2 and 3 the elements 7, 6 in opposite directions. The toothed sectors may be provided with devices to prevent premature unlocking and shock on engagement of the teeth.
Patent GB-192360-A (GB)
Title: Improvements in valve gear for internal combustion engines
IPC: F01L1/14
Filed: 1922-09-11
Abstract: 192,360. Cutler, H. H. Jan. 25, 1922, [Convention date]. Cams and tappets.-The tappet rods 12, 13 for the inlet and exhaust valves of an internal-combustion engine are shaped as shown at 21, 23, Figs. 2 and 3, so as to shorten the period of cpening of the inlet valve and to lengthen that of the exhaust valve.
Patent GB-1039474-A (GB)
Title: Watertight watch case
IPC: G04B37/08
Filed: 1964-06-15
Abstract: 1,039,474. Watches. E. PIQUEREZ. June 15,1964 [June 18, 1963(2); June 19, 1963; Nov. 15, 1963], No. 24666/64. Heading G3T. The bottom 1 of a watertight watchcase is secured within the caseband 2 so as to sealingly clamp the glass between the bottom and a rim of the caseband, by one or more bolts 3 housed in the bottom and urged, by a spring 5 or a cam 47 or 60, Figs. 17 to 20 (not shown), to engage a recess or groove in the caseband. The cam is rotated from outside by a key engaging a stem 48. The bolt may have a spring and slot connection 55, 56 with the base. In Figs. 19-20 (not shown), an interposed spring locates a notch 59 of the cam to retain it in raised position. Other variants are illustrated in Figs.4 to 18 (not shown).
Patent GB-808150-A (GB)
Title: Improvements in and relating to the oxidation of sulphur dioxide to sulphur trioxideand catalysts therefor
Inventor: DAVIES PHINIAS
IPC: B01J23/22
Filed: 1956-08-13
Abstract: Sulphur dioxide is oxidized to sulphur trioxide in the presence of a catalyst prepared by contacting a dissolved or suspended vanadium compound with an aqueous silicate solution, the materials being such that a precipitate is obtained containing a vanadium compound, silica, a sodium compound and a potassium compound, and then mixing the precipitate with kieselguhr to make the silica content of the final catalyst from 50 to 65 per cent by weight.  The catalyst preferably contains by weight 5.5 to 8.0 per cent of potassium oxide, 1.25 to 1.75 per cent of sodium oxide, 3.5 to 7.5 per cent of vanadium pentoxide, and 52.5 to 62.5 per cent of silica.  The initial vanadium compound may be vanadyl chloride, vanadyl oxalate, vanadyl sulphate or ammonium vanadate. A vanadyl sulphate solution may be added to a solution of potassium silicate and sodium silicate, or a solution of potassium hydroxide may be added to a vanadyl sulphate solution and the gelatinous suspension formed added to sodium silicate solution.  The kieselguhr may be incorporated by adding a suspension of the precipitate in water to a suspension of kieselguhr in water.  The catalyst is dried at 100 DEG  to 120 DEG  C. and then calcined at 300 DEG  to 400 DEG  C.  Before calcining the dried catalyst may be wetted with a solution of sulphuric acid.  Sulphur trioxide is obtained by contacting sulphur dioxide and free oxygen with the catalyst at a temperature of at least 380 DEG  C.  Examples are given.
Patent GB-1466989-A (GB)
Title: Bearing material with microencapsulated lubricant
IPC: F16C33/20
Filed: 1974-06-04
Abstract: 1466989 Bearings SARGENT INDUSTRIES Inc 4 June 1974 [4 Oct 1973] 24725/74 Heading F2A A body of bearing material comprises a plurality of frangible capsules 15b distributed in a matrix 196 and each containing lubricant, the body defining a bearing surface 33b. The lubricant may be oil or grease and there may be two groups of capsules 15b, each containing a different type of lubricant, e.g. for high and low temperature working respectively. The matrix may contain dry lubricant, and/or chopped fibres; a phenolic base thermosetting adhesive is a suitable material with an optimum thickness of 0À003 inch. The body may have a rear layer of adhesive material 23, attached either directly to the matrix 19b, or to a fabric interlayer 21a, Fig. 3 (not shown). The interlayer may be of nylon or rayon. A typical capsule diameter is of 50 microns.
Patent GB-464897-A (GB)
Title: Improvements relating to bomb-proof shelters
IPC: E04H9/12
Filed: 1936-09-11
Abstract: 464,897. Bomb-proof shelters. EYRE, L. Sept. 11, 1936, No. 24777. [Class 20 (i)] A bomb-proof shelter of the kind according to Specification 464,896 provided with a baffle between the outer entrance and the entrance to the shelter proper, has the fixed proof formed of reinforced concrete in which the main reinforcement comprises upper and lower section bars 7 and 8 respectively superimposed and disposed at right-angles to each other. Mesh work wire reinforcement may be disposed in layers between the bars in each layer. A separate upper roof portion 6, with its main reinforcing bars 13 disposed parallel with and directly above the bars 7 of the fixed roof portion, is superimposed with resilient devices 14 between the bars. The devices 14 may be of spring, pneumatic or hydraulic type, or a combination of these types. The upper surface of the upper roof slopes downwardly from an apex to the sides. A deflector 15 may be provided around the edge of the fixed roof portion.
Patent GB-518616-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/64
Filed: 1938-08-23
Abstract: 518,616. Television receivers. KOLSTER, BRANDES, Ltd., and SMYTH, C. N. Aug. 23' 1938, No. 24799. [Class 40 (iii)] The screen of the cathode ray tube is viewed through an aperture 1, and a sliding panel 4 is adapted to cover the aperture, and so obscure the screen, and at the same time to operate switches 8, or expose other switches, to bring into operation a tunable radio-receiver and disconnect the television apparatus. The panel 4 may be slid to cover the tuning-panel 2 and thus convert the tunable radio receiver into a fixed tuned television receiver. The panel may be moved by manual operation of the change-over switches.
Patent GB-836718-A (GB)
Title: Engine starter clutch mechanism
Inventor: SIMONE PETER FRANCIS
IPC: F16D41/00
Filed: 1956-08-14
Abstract: 836,718. Clutches. GENERAL ELECTRIC CO. Aug. 14, 1956, No. 24832/56. Class 80 (2). [Also in Group XXVII] A driving clutch member 12 is adapted to engage a driven engine clutch member 11, a third member 15 restrained against axial movement has a helical slot 20 and is mounted within the driving clutch member, a substantially radial projection 21 associated with the driving clutch member extends into the helical slot, a ratchet means includes an element or elements 25 carried by the driven clutch member and an element 19 carried by the third member 15, the elements being normally biased into ratcheting engagement by biasing means and centrifugally operated means, e.g. the pawls 25 of the ratcheting means carried by the driven member moves the elements out of ratcheting engagement whenever the driven clutch member rotates at greater than a predetermined speed. Thus when the starter motor (not shown) is operated the ratchet means imposes a drag on the member 15 and the driving clutch member 12 is shifted into engagement with the driven member 11. Only a relative motion of one tooth pitch can occur before the clutch members become fully engaged. The starter motor drives the member 16 through a gear train (not shown). In aircraft the spring 22 must be strong enough to hold the starter dog in disengaged position under acceleration and deceleration conditions.
Patent GB-171511-A (GB)
Title: Improvements in pipe joints
IPC: F16L17/04
Filed: 1920-08-27
Abstract: 171,511. Shaw, H. S. Hele-, and Tribe, E. Aug. 27, 1920. Cup-leather joints; sleeve joints with yielding outer part compressed. - In a joint for pipes of the form described in Specification 149,381 consisting of a hollow leak-proof ring 3 of flexible material having edges or lips 5 adapted to fit on the adjacent ends of the pipes and be forced by fluid pressure against the outsides thereof, the leak-proofing 3 is provided with a housing of rigid material divided circumferentially into two sections in the form of perforated caps 4. These caps may be of such a size as to compress the ends of the ring 3 into engagement with the pipes. The central portion of the ring 3 may be reinforced by fabric 7 incorporated in the material or by having its outer surface harder than its inner portion. The edges of the caps 4 mav be rounded or square. The caps 4 may be separate or may be joined by a coarse screwthread or by a bayonet-joint. Specification 167,265 is referred to.
Patent GB-219539-A (GB)
Title: Improvements in annealing pans
IPC: C21D9/00
Filed: 1923-10-06
Abstract: 219,539. Baker, H. Oct. 6, 1923. Drawings to Specification. No Patent granted (Sealing fee not paid). Annealing-boxes.-In an annealing-pan of the type described in Specification 218,602 the webs or partitions are provided with vertical grooves or corrugations.
Patent GB-1152354-A (GB)
Title: Cyclic Water Hammer Apparatus
Inventor: KARPOVICH JOHN
IPC: B01F11/02
Filed: 1966-06-03
Abstract: 1,152,354. Mixing in conduits; making oilwater emulsions. DOW CHEMICAL CO. 3 June, 1966, No. 24896/66. Headings BIC and B1V. [Also in Division F2] Apparatus for cyclically producing cavitation in a flowing liquid stream, e.g. to facilitate mixing or emulsification in a liquid system, comprises at least first, second and third flow channels 12, 16 and 18, the output end of the channel 12 being connected to the input end of the channels 16, 18, and a flutter valve assembly including a pair of valve seats and a single valve element 20 adapted to seat against either of the valve seats, one of the valve seats being disposed at the input end of each of the channels 16, 18. Communication between the channels 12 and 16 is through one of the seats and between the channels 12 and 18 through the other of the seats. There is a pump 10 for continuously circulating a liquid stream through the channel 12 and one of the channels 16, 18. In operation, a vessel 24 is filled with a liquid base medium, such as oil and water, which is pumped towards the channels 16, 18 whereby the valve 20 swings suddenly to close channel 18, for example, so that water hammer occurs and the medium beyond the valve is placed in tension to subsequently produce in the liquid cavities which collapse suddenly to generate shock waves in the liquid, the latter then changing the direction thereof causing the valve to swing over and close the channel 16 which cyclic closure behaviour of the valve continues in a repetitive manner. In a modification, Fig. 3 (not shown), the medium is not recirculated but passes only a single time through the apparatus from one vessel to another, the flow line being divided into two separate flow channels at a plurality of places. The valve may be a ball valve disposed between the valve-seat-forming, axiallyaligned ends of a pair of fluid lines.
Patent GB-254569-A (GB)
Title: Flexible metal union piece for piping connections
IPC: F16L27/04
Filed: 1925-10-06
Abstract: 254,569. Pardon, r. 1.. Oct. 6. 1925. No Patent granted (Sealing fee not paid). Ball-and-socket joints.-Two pipes 1, 1<1>, provided with a semi-spherical socket 2 and a coacting head 2' respectively are jointed by means of a tapering spiral spring 8, positioned between a. shoulder 2<11> on the head 2<1> and a shoulder 6 on a sleeve 5 which is screwed onto the socket 2. In order to prevent the pipe 1<1> and shoulder 6 from contacting a rubber ring 8' is provided in the sleeve 5.
Patent GB-588053-A (GB)
Title: Improvements in or relating to a method of and means for sealing parcels, bags and other containers
IPC: F16B15/00
Filed: 1944-12-12
Abstract: 588,053. Sealing. DINGWALL, T. E. Dec. 12, 1944, No. 24943. [Class 146 (ii)] In a method of sealing using a two-part seal for sealing strings &c. a pronged component 1, Fig. 2, preferably of metal, is clinched into a penetrable component 9, Fig. 10, preferably of hand-made rope, multi-board, leatherboard &c. the prongs 2 being forced into and becoming embedded within the material of the part 9, the part 9 being beaded at 9b so that when placed on the anvil 6, Fig. 12, of a sealing-tool correspondingly recessed to receive it, the prongs 2 are induced to turn inwardly into hooked engagement within the material of the part 9. The part 9 has a central hole to fit over a projection 8 on the anvil 6, and can be shaped as shown in Fig. 10, or as shown in dotted lines in Fig. 12. The anvil has a sunken platform portion 10 and an annular groove 11 shaped as shown in full lines in Fig. 12. The pronged part 1 has unequally-spaced prongs 2 to accommodate a package string &c. The sealing-tool comprises a substantially U-shaped frame, the lower limb forming the anvil 6, and in the upper limb is a plunger having an end cap resiliently mounted thereon and in which the seal part 1 is placed. An arm pivoted at one end to the frame is connected by a link to the plunger whereby the latter can be depressed. A helical spring acts on the arm to return it to normal position. Specification 588,080 is referred to.
Patent GB-1169079-A (GB)
Title: Practice Ammunition
Inventor: GAWLICK HEINZ
IPC: F42B10/34
Filed: 1967-05-31
Abstract: 1,169,079. Practice projectiles. DYNAMIT NOBEL A.G. 31 May, 1967 [1 June, 1966], No. 25049/67. Addition to 1,143,436. Heading F3A. Practice ammunition projectile as in Specification 1,143,436 is characterized in that the forward end of the projectile terminates as an annular end surface which is substantially perpendicular to the axis of the bore. The forward and/or rearward end portion of the projectile body may be formed as a truncated core. The destructible covering may be provided with a shearable flange, whereby the covering is forced through the bore by the pressure of the propellant gases.
Patent GB-260238-A (GB)
IPC: F01K7/22
Filed: 1926-10-08
Abstract: 260,238. Ancisns Etablissements Sautter-HarlÚ. Oct. 24, 1925, [Convention date]. Working-fluid supply; motor power plant. - A high-pressure superheated steam turbine installation comprises two turbines 1, 6 connected in series and having an intermediate superheater 4, the pressure drop in the first turbine being such that the entropy areas A, B of the two turbines are the same so that each turbine drives its electric generator at the same speed and gives substantially the same output. The line c cl represents the real expansion in the turbine 1 from an initial pressure of about 50 kgs. down to a pressure of 2 kgs. The steam is then superheated to 400‹ C, and expanded in the turbine 6, as represented by the line e f, the steam being still saturated at the point f. The turbine 1 receives steam from a pipe 3 and superheater 2, while a pipe 8 leads boiler steam to heat the low-pressure superheater 4, a pipe 9 and pump 9<1> conveying this steam back to the boiler. Any other means for heating the superheater may be adopted. Steam may be extracted between the turbines or stages thereof.
Patent GB-714082-A (GB)
Title: Improvements in or relating to the purification of penicillin salts
Inventor: GROSS ERNEST GODFREY
IPC: C07D499/20
Filed: 1951-10-26
Abstract: Penicillin is purified by treating penicillin or a salt of penicillin with oxycaine (diethylaminoethyl ortho hydroxy p-amino benzoate) or a salt of oxycaine in solution in a solvent in which oxycaine penicillin is substantially insoluble, separating the precipitated oxycaine penicillin and suspending it in a mixture of water and a substantially water-immiscible organic solvent, and (a) decomposing the oxycaine penicillin under acid conditions, extracting the liberated penicillin into the organic solvent and recovering therefrom the purified penicillin, or (b) decomposing the oxycaine penicillin under alkaline conditions at a temperature below room temperature, extracting the oxycaine base into the organic solvent and recovering the formed salt of penicillin from the aqueous solution.  Preferably excess oxycaine is used and the penicillin is given a prior purification with activated carbon.  A fermentation broth is first treated to isolate the penicillin to remove some of the impurities in the broth.  Specified solvents are water; aliphatic carboxylic acid esters such as amyl acetate and butyl acetate; aliphatic alcohols such as ethanol, propanol, butanol and amyl alcohol; ethers, e.g. ethyl ether, methyl ethyl ether and isopropyl ethyl ether; ketones such as methyl ethyl ketone and methyl isobutyl ketone; acetone-butyl acetate and butanol-butyl acetate mixtures; and aqueous organic solvents, e.g. aqueous acetone, aqueous methyl ethyl ketone and aqueous butanol. Specified substantially water-immiscible organic solvents are, in addition to those above which are water-immiscible, chlorinated aliphatic hydrocarbons such as chloroform, and diisopropyl ether. For decomposing the oxycaine penicillin under acid conditions pH1.5 to 2.5 is preferred.  Salts of penicillin are formed by treating the organic solvent solution of the liberated penicillin with (a) an alkali metal or alkaline earth metal compound such as sodium hydroxide or sodium bicarbonate, or (b) an organic base such as procaine or oxycaine.  Specification 655,649 is referred to.